Update app.py

app.py

@@ -3,46 +3,81 @@ import json
 import pandas as pd
 from io import BytesIO
 
-st.set_page_config(layout="wide")
+# -------------------------------------------------
+# Page Config
+# -------------------------------------------------
+st.set_page_config(
+    page_title="JSON to Excel Converter",
+    layout="wide"
+)
 
-st.title("JSON to Excel Converter")
+st.title("📘 JSON to Excel Converter")
 
-json_text = st.text_area("JSON Data", height=300)
+# -------------------------------------------------
+# Input Area
+# -------------------------------------------------
+json_input = st.text_area(
+    "JSON Data",
+    height=350,
+    placeholder="Paste your JSON data here..."
+)
 
-def process_json(data):
+# -------------------------------------------------
+# JSON Processing Logic
+# -------------------------------------------------
+def flatten_json(data):
     rows = []
 
-    def traverse(obj):
-        for k, v in obj.items():
-            if isinstance(v, dict):
-                rows.append([k, None])
-                traverse(v)
+    def walk(obj):
+        for key, value in obj.items():
+            if isinstance(value, dict):
+                rows.append([key, None])
+                walk(value)
             else:
-                rows.append([k, v])
+                rows.append([key, value])
 
-    traverse(data)
-    return pd.DataFrame(rows, columns=["Object Name/Key Name", "English_Values"])
+    walk(data)
+    return pd.DataFrame(
+        rows,
+        columns=["Object Name/Key Name", "English_Values"]
+    )
 
-if st.button("Generate Excel Data"):
-    try:
-        cleaned = json_text.replace(",}", "}").replace(",]", "]")
-        parsed = json.loads(cleaned)
+# -------------------------------------------------
+# Button Action
+# -------------------------------------------------
+if st.button("Generate Excel Data", type="primary"):
+    if not json_input.strip():
+        st.warning("Please paste JSON data.")
+    else:
+        try:
+            # Fix trailing commas
+            cleaned_json = (
+                json_input
+                .replace(",}", "}")
+                .replace(",]", "]")
+            )
 
-        df = process_json(parsed)
+            parsed_json = json.loads(cleaned_json)
+            df = flatten_json(parsed_json)
 
-        st.subheader("Excel Preview")
-        st.dataframe(df, use_container_width=True)
+            st.subheader("📊 Excel Preview")
+            st.dataframe(df, use_container_width=True)
 
-        output = BytesIO()
-        with pd.ExcelWriter(output, engine="xlsxwriter") as writer:
-            df.to_excel(writer, index=False, sheet_name="Labels")
+            # Create Excel file
+            excel_buffer = BytesIO()
+            with pd.ExcelWriter(excel_buffer, engine="xlsxwriter") as writer:
+                df.to_excel(
+                    writer,
+                    index=False,
+                    sheet_name="Labels"
+                )
 
-        st.download_button(
-            "Download Excel File",
-            data=output.getvalue(),
-            file_name="JSON_To_Excel.xlsx",
-            mime="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
-        )
+            st.download_button(
+                label="📥 Download Excel File",
+                data=excel_buffer.getvalue(),
+                file_name="JSON_To_Excel.xlsx",
+                mime="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
+            )
 
-    except Exception as e:
-        st.error(f"Invalid JSON: {e}")
+        except Exception as e:
+            st.error(f"Invalid JSON format: {e}")